{
  "id": "python/pip-invalid-constraint-file",
  "signature": "ERROR: Invalid constraint line in constraints.txt: 'package1' - Expected a version specifier",
  "signature_zh": "错误：constraints.txt 中的约束行无效：'package1' - 需要版本说明符",
  "regex": "ERROR:\\ Invalid\\ constraint\\ line\\ in\\ constraints\\.txt:\\ 'package1'\\ \\-\\ Expected\\ a\\ version\\ specifier",
  "domain": "python",
  "category": "config_error",
  "subcategory": null,
  "root_cause": "A constraint file must contain package names with version specifiers (e.g., package1>=1.0), but a bare package name was found.",
  "root_cause_type": "generic",
  "root_cause_zh": "约束文件必须包含带有版本说明符的包名（例如 package1>=1.0），但发现了一个裸包名。",
  "versions": [
    {
      "version": "3.8",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "3.9",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "3.10",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "3.11",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "3.12",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Comments are ignored; the invalid line still causes error.",
      "fail_rate": 1.0,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Constraints files have different syntax; using them as requirements may fail.",
      "fail_rate": 0.6,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.95,
      "how": "echo 'package1>=1.0' >> constraints.txt",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.9,
      "how": "sed -i '/^package1$/d' constraints.txt",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.83,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2025-01-10",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}